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Finding the Fourth Proportional to 439.54, 605.98 and 360.56

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Solution

The fourth proportional to 439.54, 605.98 and 360.56 is: 497.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.54 : 605.98 = 360.56 : x
  2. Step 2: Convert to fraction form
    439.54/605.98 = 360.56/x
  3. Step 3: Cross multiply
    439.54x = 605.98 × 360.56
  4. Step 4: Simplify right side
    439.54x = 218,492.15
  5. Step 5: Solve for x
    x = 218,492.15/439.54
  6. Step 6: Final answer
    x = 497.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.